Liquid pump



Au g. 13, 1957 L. v. ALTMAN ET AL 2,802,506

' LIQUID PUMP Filed July 2, 1954 2 Sheets-Sheet l '//vl/E/VTORS LOUIS V ALTMAN HENRY JUNG 4 @l By: 'ATTORNEY ami* mm Q Aug. 13, 1957 1 v. ALTMAN x-:T AL 2,802,606

LIQUID PUMP Filed July 2, 1954 2 sheetssneu 2 m .wi m mm Q mm S F E w .mw @v Q mm \f// m mm Q\1 n@ .om

N .wm Q

LIQUID PUNP Louis V. Altman andHenry Jung, Racine, Wis., Iassigiiors to Applied Engineering of Wisconsin, Racine, Wis., a corporation of Wisconsin i `applicati@ Juiyz,1954,1sena1111.440.8881 A' 'i sciame. CLzzz-'-azn)V y 1j This invention relates to pumps, and, more partcula 1y, it relates to pumps of the type mountable on oil con-l tainers suchras the pint and quart size oil cans.

It is `an object of this invention to provide anoil can pump which attaches directly to an oil can and is inexpern sive but eiicient and durable.v This object is best achieved through-the utilization of 'metal stampings which form parts of the pump. A

Another object of this invention is to provide an oilcan pump which attaches directly to an oil can and is stabilized thereon by the can itself.' In 4achieving this object', the pump and can are unified to permit them to be rnanipu` lated for at leastmost oiling operations. r Still another object is to provide a single sizexoil' can pump which can be attached to .different sizes of oil' cans, and be securely aixed thereto, and be capable of pumping all of the oil from either a pint or a quart ora like 2,802,606 Patented Aug. 13, 1957 ice ter ofthe top 23 o f the can.` Then the housing 14 is inserted into the hole vwhich is substantially concentric with .the can top. The pump threads 13 are self-tapping threads which are tapered down at their bottom end diameter to enable them: to readily screw onto the can top to mount the pump onto the Vcan in the position shown. It

i should also be appreciated that `the bottom surfaces of the mounting extensions 19 and 20 abut the top of the can rim 24, and, as the threads 13 screw onto the can top, the latter is pulled up to the top level of the rim 24 to abut the bottom of the pump mounting portion 17.

. lnqthilsfmanner, ,the pump is stabilized onto the can i 11-,by flutilizing the can r1m to obtain a support point on each opposite slide ofthe attachment rpoint of the threads. Further/shown in- Fig, 1 is a `fulcrum 26 which is preferably spot'welded to the top horizontal surface of the mounting extension 19. -.The fulcrum is angled to extend vertically above the extension 19 to terminate in a reduced tip 27. Also, as shown in Figs. 1, 2, and 5, a shoulder portion 28` exists on the fulcrum, immediately below the tip 27. A preferably S- curved trigger 31 is provided at I its mijdfpo'rtionwith a circular hole 32 which receives the fulcrum tip 27 while an end of the trigger contains a second hole 33 which engages a vertical connecting rod 34 projecting' above the pump member 12. The latter engagement is at a point below an acorn nut 36 threaded if, onto the upper end of the rod 34 with the nut larger than size of can, without theneed of any changes in the ypump structure.

Another Objectis to provide an improved Aliquid pump. Other objects and advantages. will become apparent upon reading the following `description inconjunction with lthe accompanying drawings, wherein l Fig. l is a side perspective view of a preferred embodi-l ment of this invention; 5 i I f Fig. 2"is `a fragmentary' side elevational view fof the embodiment shown in Fig. 1 but with the operating parts inadifferent position'. Y Fig. 3v is a sectional view taken on the line- 3--3 of Fig. 4 is a sectional View taken on the line 44`4fof the hole 33 to secure the assembly. With this arrangement, depressing the trigger 31, from the position shown in-Fig. 1, to `that shown inFig. 2, will causethe connecting `rod to' be raised to extend further above the member 12. .In this operation a liquid pumping stroke is, of course, effected and4 it shouldbe understood that the trigger 31 has pivoted about the fulcrum tip 27 on the shoulder 28. In so doing, the hole 33 slides with respect to the rod 34xto compensate for the arcuate movement of the hole and the straight vertical axial movement of the rod 34. Since the latter, therefore, can move axially with respectl to the pump 10, the problem of fluid sealing the rod with the pump is simplified.

To complete `the description of the pump parts shown in Fig. l, it is noted that a liquid outlet spout 37 is threaded Fig. 5 is a isectionalview taken on theline 54- 5 of i Similar reference numerals refer to I similar parts throughout the several views. l g Fig. l shows -a preferred embodiment :of a pump 10- of this invention mounted on a quartsize oiljcan 11. TQ

to the member 12 is desciibedlater.4 Fig; l'fur'ther lshows l 'f a member 16 attached to an intermediate sectionoffthe member 12 to extend transversely thereto in amounting portion 17-which is connected to a handle 18.* As shown; it' is preferred that the portion 17 be'liatand-circ'ular liivith integral diametrically opposite extensions '19-a'n`d 20. Also, the end of theA handle 18 4terminates in-.a'can punch 22. With' 'the foregoing:*described sfti'uctfuraiitgshould be understood that before thepump 10-is mounted onto the into the member12'- to extend transversely thereto on the side opposite thehandle. 18. Also, an axially movable and telescopically arranged depth compensator 38 is loatedinithe bottomend of the housingA 14. The compensator'38isfbest' shown in Figs. 2 and 3 wherein it is seen that'a tube 39 is'threaded at lthe top to attach to a bored piston' 41. The lower endof the tube contains a side slot42 which communicates the exterior ofthe compensator with the interior of thel tube. Also, to secure the'compensator to the housing -1 4, it is preferred to crimp the bottom `end of the housing to provide an edge 43 which is smaller in diameter than the diameter of the piston 41.` The ylatter can then slide axially within the housing but it can not slide out of the housing 14.

As shown in Fig. 2, a pint size liquid can 44 is employed to mount the pump 10. Inthis case, the compensator 38 has moved up in the housing 14" fromthe position of Fig. l to that o f'Fig. 2 to accommodate 'the different lengths oft'hecuis- `11` and 44. The compensator piston 41 is substantially fluid tight with the inner wall of the tube 14but it is free to slide'the'rewithin. It slides downwardly under its own'w'eig'ht and upwardly by abutting the bottom of `a can'. -T-he pump'me'chanism is shown in Figs. 2 and 3 to be preferably of the type containing a piston or plunger 46 snugly fitted in to the tube' 14 Vto be slideable therewithin. The piston is hollow 4with an opening 47 in the bottom thereof to seat a ball'valve 48. The top end of the piston receives a transverse pin 49 anchored in the piston with meenam a center portionpassing` through alowerreye'end 451 of ythe connecting rod 34. Also, Fig. 3 shows the rod 34 passes through an upper hole 50 inthevmemberlz lto extend betweenthe'pistonlland theftrigger 31. p 1 j s Thus, the rod 34reciprocatesthe pstonitorpump "liquid from the tube ,'14 and out the 4spou`t-37 intltepis'tomupward movement Vas the-'ball48 thenfantomatically closes theopening 47. The downward movement'of-'th'episton allows liquid toV pass up into *the *tube i154- through the compensator 38. YToV automatically-effect lthisfdownw'ard movement, a coil 'spring S32-is disposedcaroundtherod 34 and between the pin74'9 and auidfseal'washeriS'at Vthe top of-the `member 51'2. The washer,-of course, r`has -ga l centralopening vthrough which the rod 3"4c`an-pass;

Fig. 4 shows the preferred manner of attaching fthe spout 37 to the members I2 and-Blvbythreadingethereinto; The spout is, Aof course, thenintluidcommunication with the inside of the tube-114. Withthis arrangement, Vthe tube 14, member 1l2, Y'andi-the lspout 37 Iare all secured together. The washer'53`is abovethe 'spout'fh faslshown in Fig. v2.

Thus, it will be seen that'a simple-'but durable vliquid pump is disclosed. The pump isinexpensive-in-fthatfeertain parts, such as 'the mounting portion I6,-with the extensions 19 and 20, the handle l18, the'fu'lcru'mfz, and the trigger 31 are `all readily 'made by stamping.- Eve-n the punch 22 is stampedfrom the'same'me'tal whicheform's the handle 18. Further, thefassemblyi-s simplein that t-lie' tube 14 and the member 12 and the'compensator-Stare all telescoped ltogether with 'theffirst "two-'nrembers'being secured together by the spout?.

In the mounting of vthe .punlpvont'o Athecan,.lt=he.fo1egoing describes 'the pump transverse-extension members V19 and 20 at 4theupper :end of Stheepump Iwith said-menibers engaging the top rim :of `the can. Obviously, if the extension .memberl20 werenot.there,fthen fthelowerl'edge of the spout V37 would serve as ithesuliportrpoirit "atthe adjacent rim of the *.can. Further, i-f it is preferreithe spout could be moved Ydown `rtoithe ylevel 1where zthe extension 20 is now shown. Thus, :whilea specicembn'diment of this invention `has v'been1shown.antldescribexithe'scope thereof should be limited .only vby the :appended rclaims.

We claim:

l. A liquid pump comprising atubularipnmp .housing having a liquid inlet at `onefendztlrereof Aand :'arliq'uid .outlet at the side of the other end'thereof withzaniintermediate liquid chamber, .aqpump pistondisposed within said schamber, a hollowcylindrical .member of afdiameterztosnugly telescope with the -end of zsaid 'housing'.containing,.fsaid outlet, vsaid cylindrical-,member extending heyond :said housing end 4with .-a reduced opening in fthe extend-ing portion and havinga liquid outlet aligned'vt'.it-htsa'id.hous-l ing outlet, a piston operating rod projecting through said Yreduced opening to connect to said pumpfpistom a lliquid spout threaded into the :aligned outlets-.of said :housing and said cylindrical :member :to secure said pump assembled. Y

2. A can mountable liquid, pump comprising an upright tubular `pump housing fh-aving'a'liquid .inletat the lower end thereof and a liquid outlet'at the side -of the upper end thereof with an intermediate liquid chamber., fa plunger snugly disposed within -said chamber-toreciprocate .therewithim a .hollow-cylindrical member `of afdiameter to snuglytelescope -with the upper Aend Afof zsaidfhousing, said member forming an'extensionto said-housing and having a reduced axialfopening in saidextension land having a liquid Voutletvaligned with .said -.'housing1outlet, a plunger operating rod received within said .reduced-axial opening `to connect at `one vend to :saidplunger,-a .liquid spout threaded into the aligned -out-lets .offsaid .housing and said Vcylindrical member .to Isecure .the-latter-twoparts, exterior threads'formedon the assemblyzof the .latter .two parts immediately below said'spout--tofpenmittthreadedly attaching Said pump .ontothe vtopof said .can`

3. A can mountable liquid pump comprising a tubular pump housing' Y-havingeavliquid4 yinlet and` ia liquid Youtlet with an intermediate chamber, a pump plunger disposed within said chamber to be` reciprocable therewithin, a hollow cylindrical member of a diameter larger than said housing diameter to snugly telescope therearound and having a liquid outlet aligned with said housing outlet, a spout threaded into said housing and s-aid Icylindrical member aligned outlets, aha-ndle-attached to said cylindrical lmember to-extend therefrom: on substantially `t-he 'same plane withsa'id spout, a threaded'section on the telescoped portion of said cylindrical member. irrimedi- -ately below said spoutV and said handle whereby said threaded'section-screwsnto aholeinthe top of said can to mount said pump onto saidcan.

4. A liquid pump for mounting onto a cylindrically shaped liquid can of the type having a can top and having a circular rim around the circumference of ysaid can top with said rim'extended'beyond the lsurface fisaid can top, the'- combinationgc'ompi'isng a -pump housingp l'having a lower liquid linlet and -fani upper liquidfout'let, Y av lthreaded .connector on said housing intermediate said -inlet Vand said outlet lfor' ythreading 'into :said `can 'top, -a liquid plunger disposed V:in lsaid housing Y-for pumping liquid therethrough uponreciprocationv of said plunger 1in said housing, a spout attached to said housingto communicate with isaidrliquid outlet, ahandle attached to said housing abovetthethreads oflsaid :connector and extending from said housing .in oppositeidirections Yand infdimensions lat least. :equal tothe radiuszof said `can 'for overlying Yand abutting said rim 'ofsaidvcan when'said pump is `centrally :mounted .on Asaidceantop by '.said Vconnector being threaded intoeSaidicantop.

5. `A can:mountableliquidtpump comprising a housing having .a liquid inlet at Aone endlandaliquid outletat the opposite end, :a tspouttattached to Vsaid .housing and in communication with said liquid outlet, a threadedconnector onzsaidfhousin'g immediately :below said. spoutfor threading `finto "a :hole rin 1the stop of .said can, :a yhandle attached to tsaid Ihousing"ab0ve=,the :threadson-said con-Y nector and extending in :opposite Vdirections :from said housing for abuttingxopposite sides .of the top edge .of said can when said pump is mountedTon'ssaid container, a plunger-disposed in said housing for moving liquid therethrough to said 'liquid outlet, -a .connecting 4`rod .attached to said plunger and projectingrfrom :said fhousing, la fulcrum mounted on saidfhandle, a lever pivoted on tsaid fulcrum and attached to said connecting rod for reciprocating thelatter.

' '6. A can mountable liquid pump comprising a tubu- 'lar pump housing .for `use lin :an uprightzposition and having a liquid inlet at the lower end thereof and a liquid outlet at .the upperend thereof "and having ,any interme diate liquid chamber, a pump fplunger .snugly disposed `within .said chamberltoebe reciprocable therein, a connector attached to "the y:upper end :of said-housing and having a liquid outlety in liquid lilow communication with said liquid outletv of said housing, taspout attached Vto said connuector yand in liquid ow communication with said `liquid outlet offsaid connector, :said connector including a `threaded port-ion disposed below said fspout, transverselyextendingmembers attached to Asaid .connector randprojecting on opposite sides thereof 4in ya planer 'intermediatey said .spout 'fand fsaid threaded Aportion for abutting .dametrically opposite locationson the rim of the jtop ,of said can when'said thrcadedportion is rthreaded :into .an opening .in said'top yof said can, a handlerigidly connectedto-one of -said ltransversely extending members, ;means on :said .-one 1of said: transversely extending members .and connected to .saidpump'jplunger for :reciprocating tthe latter.

`7. mtliqudpurnp comprising a ypurnp..housing for use in an `upright ,position and :having `a 4liquid inlet aat the loweriend...thereof .and aliquidk outlet at v`the rupper end thereofranddiavingan -intermediate ,liquid chamber, `a plunger vdisposed in said chamber to be reciprocable therein, a rod attached to said plunger and projecting above said housing for movement axially of said housing, a nut threaded on the upper end of said rod, a pump handle attached to said housing and projecting transversely therefrom, a fulcrum mounted on said handle and extending thereabove with the upper end of said tfulcrum reduced in size to present a shoulder and angularly disposed away from said housing, a lever having a central opening intermediate of the length of said lever and an end opening on one end of said lever with said central opening snugly receiving said upper end of said fulcrum and said end opening loosely receiving said rod below said nut all for pivotal movement of said lever on said shoulder of said fulcrum to reciprocate said rod and said plunger. y

8. A liquid pump comprising a pump housing for use in an upright position and having a liquid inlet at the lower end thereof and a liquid outlet atthe upper end thereof and having an intermediate liquid chamber, a pump plunger disposed within said chamber to be reciprocable therein, a spring in said housing for yieldingly urging said plunger downwardly, a plunger rod attached to said plunger and extending therefrom through said upper end of said housing for reciprocation along the axis of said rod, an enlarged portion on the upper end of said rod, a mounting member attached to said housing and extending transversely thereto, a fulcrum attached to said mounting member and projecting thereabove and terminating at the upper end of said fulcrum with a reduced portion disposed above the lower end of said enlarged portion on said rod when the latter with said plunger are in the extreme downward position under the inuence of said spring, said reduced portion disposed angularly away from said housing and having a shoulder below said reduced portion, a lever pivotally supported on said shoulder of said fulcrum and having a central opening receiving said reduced portion and said lever having an end opening receiving said rod below said enlarged portion, said reduced portion of said fulcrum being sufficiently curved and spaced from said rod with respect to the spacing between said central opening and said end opening on said lever a distance suicient to secure said lever on said reduced portion of said fulcrum when said plunger and said rod are in said downward position.

References Cited in the iile of this patent UNITED STATES PATENTS Great Britain June 21, 1928 

